Convert Acres to Hectares
One acre equals 0.404686 hectares. Type any value to convert acres to hectares instantly — with a full reference table below.
Convert Acres to Hectares
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How to convert Acres to Hectares
To convert acres to hectares, multiply by 0.404686. One acre equals 0.404686 ha, and one hectare equals 2.471054 ac.
- Take the value in acres — for example 7.5 ac.
- Multiply by 0.404686 (the number of hectares in one acre).
- 7.5 × 0.404686 = 3.035142 ha.
Quick mental estimate: Multiply the number of acres by 0.4 (within 1.2% of the exact answer).
Acres to Hectares conversion table
| Acres | Hectares |
|---|---|
| 1 ac | 0.404686 ha |
| 2 ac | 0.809371 ha |
| 3 ac | 1.214057 ha |
| 5 ac | 2.023428 ha |
| 10 ac | 4.046856 ha |
| 20 ac | 8.093713 ha |
| 50 ac | 20.23428 ha |
| 100 ac | 40.46856 ha |
| 200 ac | 80.93713 ha |
| 500 ac | 202.3428 ha |
| 1,000 ac | 404.6856 ha |
| 5,000 ac | 2,023.428 ha |
| Hectares | Acres |
|---|---|
| 1 ha | 2.471054 ac |
| 2 ha | 4.942108 ac |
| 3 ha | 7.413161 ac |
| 5 ha | 12.35527 ac |
| 10 ha | 24.71054 ac |
| 20 ha | 49.42108 ac |
| 50 ha | 123.5527 ac |
| 100 ha | 247.1054 ac |
| 200 ha | 494.2108 ac |
| 500 ha | 1,235.527 ac |
| 1,000 ha | 2,471.054 ac |
| 5,000 ha | 12,355.27 ac |
About converting Acres to Hectares
Acres (ac) and Hectares (ha) are both units of area. The exact factor is 1 ac = 0.404686 ha, so multiply by 0.404686 to go from acres to hectares (or divide to go back).
The conversion runs entirely in your browser. Need the reverse? Use the Hectares to Acres converter, or the full unit converter for every unit at once.
Real-world area in acres and hectares
| Example | Acres | Hectares |
|---|---|---|
| A doubles tennis court (23.77 × 10.97 m) | 0.0644344 ac | 0.0260757 ha |
| An NBA basketball court (94 × 50 ft) | 0.107897 ac | 0.0436644 ha |
| An American football field (incl. end zones) | 1.322314 ac | 0.535122 ha |
| A football pitch (105 × 68 m) | 1.764332 ac | 0.714 ha |
| One acre | 1 ac | 0.404686 ha |
“≈” marks typical values; the rest are defined or measured figures.
The units
43,560 square feet, exactly 4,046.8564224 m².
Used for: Farmland and property in the US, UK, India and Australia.
10,000 m² — a square 100 m on each side.
Used for: Farmland and land records in metric countries.
Area factors are the squares of exact length factors, so they are exact too (an international acre is exactly 4,046.8564224 m²).